io.honeybadger.com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer Maven / Gradle / Ivy
package com.fasterxml.jackson.databind.deser.std;
import java.io.IOException;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
/**
* Base class for deserializers that handle types that are serialized
* as JSON scalars (non-structured, i.e. non-Object, non-Array, values).
*/
public abstract class StdScalarDeserializer extends StdDeserializer
{
// @since 2.8.8
protected final static int FEATURES_ACCEPT_ARRAYS =
DeserializationFeature.UNWRAP_SINGLE_VALUE_ARRAYS.getMask() |
DeserializationFeature.ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT.getMask();
private static final long serialVersionUID = 1L;
protected StdScalarDeserializer(Class vc) { super(vc); }
protected StdScalarDeserializer(JavaType valueType) { super(valueType); }
// since 2.5
protected StdScalarDeserializer(StdScalarDeserializer src) { super(src); }
@Override
public Object deserializeWithType(JsonParser p, DeserializationContext ctxt, TypeDeserializer typeDeserializer) throws IOException {
return typeDeserializer.deserializeTypedFromScalar(p, ctxt);
}
protected T _deserializeFromArray(JsonParser p, DeserializationContext ctxt) throws IOException
{
JsonToken t;
if (ctxt.hasSomeOfFeatures(FEATURES_ACCEPT_ARRAYS)) {
t = p.nextToken();
if (t == JsonToken.END_ARRAY) {
if (ctxt.isEnabled(DeserializationFeature.ACCEPT_EMPTY_ARRAY_AS_NULL_OBJECT)) {
return getNullValue(ctxt);
}
}
if (ctxt.isEnabled(DeserializationFeature.UNWRAP_SINGLE_VALUE_ARRAYS)) {
final T parsed = deserialize(p, ctxt);
if (p.nextToken() != JsonToken.END_ARRAY) {
handleMissingEndArrayForSingle(p, ctxt);
}
return parsed;
}
} else {
t = p.getCurrentToken();
}
@SuppressWarnings("unchecked")
T result = (T) ctxt.handleUnexpectedToken(_valueClass, t, p, null);
return result;
}
}